Patents by Inventor Changwuk OH

Changwuk OH has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • External fixator and external fixing system
    Patent number: 10631897
    Abstract: Provided is an external fixator for reduction of a fractured or deformed bone, which includes a first frame through which the bone passes, a second frame through which the bone passes, the second frame being spaced apart from the first frame, and a variable leg connected to the second frame by a ball joint and having a first leg and a second leg at which a thread is formed respectively. The ball joint includes a ball connected to the first leg through a ball axle and having a perforation hole passing through a center thereof, a ball housing located at the second frame and having a fitting groove into which the ball is fit and a pair of insert holes formed at an outer surface thereof along a direction traversing the fitting groove to face each other, and a pin member provided on the insert hole to pass through the perforation hole. As the ball housing rotates, the first leg rotates to fasten or release screw coupling between the first leg and the second leg and thus change a length of the variable leg.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: April 28, 2020
    Assignee: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Ilhyung Park, Changwuk Oh, Hyunwoo Lee, Sanghyun Joung, Chulwoo Park
  • EXTERNAL FIXATOR AND EXTERNAL FIXING SYSTEM
    Publication number: 20190029727
    Abstract: Provided is an external fixator for reduction of a fractured or deformed bone, which includes a first frame through which the bone passes, a second frame through which the bone passes, the second frame being spaced apart from the first frame, and a variable leg connected to the second frame by a ball joint and having a first leg and a second leg at which a thread is formed respectively. The ball joint includes a ball connected to the first leg through a ball axle and having a perforation hole passing through a center thereof, a ball housing located at the second frame and having a fitting groove into which the ball is fit and a pair of insert holes formed at an outer surface thereof along a direction traversing the fitting groove to face each other, and a pin member provided on the insert hole to pass through the perforation hole. As the ball housing rotates, the first leg rotates to fasten or release screw coupling between the first leg and the second leg and thus change a length of the variable leg.
    Type: Application
    Filed: September 1, 2016
    Publication date: January 31, 2019
    Inventors: Ilhyung PARK, Changwuk OH, Hyunwoo LEE, Sanghyun JOUNG, Chulwoo PARK